diff options
Diffstat (limited to 'liblo/pthreads.2/pthread_win32_attach_detach_np.c')
| -rw-r--r-- | liblo/pthreads.2/pthread_win32_attach_detach_np.c | 303 |
1 files changed, 303 insertions, 0 deletions
diff --git a/liblo/pthreads.2/pthread_win32_attach_detach_np.c b/liblo/pthreads.2/pthread_win32_attach_detach_np.c new file mode 100644 index 0000000..ebff33c --- /dev/null +++ b/liblo/pthreads.2/pthread_win32_attach_detach_np.c @@ -0,0 +1,303 @@ +/*
+ * pthread_win32_attach_detach_np.c
+ *
+ * Description:
+ * This translation unit implements non-portable thread functions.
+ *
+ * --------------------------------------------------------------------------
+ *
+ * Pthreads-win32 - POSIX Threads Library for Win32
+ * Copyright(C) 1998 John E. Bossom
+ * Copyright(C) 1999,2005 Pthreads-win32 contributors
+ *
+ * Contact Email: rpj@callisto.canberra.edu.au
+ *
+ * The current list of contributors is contained
+ * in the file CONTRIBUTORS included with the source
+ * code distribution. The list can also be seen at the
+ * following World Wide Web location:
+ * http://sources.redhat.com/pthreads-win32/contributors.html
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library in the file COPYING.LIB;
+ * if not, write to the Free Software Foundation, Inc.,
+ * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
+ */
+
+#include "pthread.h"
+#include "implement.h"
+
+/*
+ * Handle to kernel32.dll
+ */
+static HINSTANCE ptw32_h_kernel32;
+
+/*
+ * Handle to quserex.dll
+ */
+static HINSTANCE ptw32_h_quserex;
+
+BOOL
+pthread_win32_process_attach_np ()
+{
+ BOOL result = TRUE;
+ DWORD_PTR vProcessCPUs;
+ DWORD_PTR vSystemCPUs;
+
+ result = ptw32_processInitialize ();
+
+#ifdef _UWIN
+ pthread_count++;
+#endif
+
+ ptw32_features = 0;
+
+
+#if defined(NEED_PROCESS_AFFINITY_MASK)
+
+ ptw32_smp_system = PTW32_FALSE;
+
+#else
+
+ if (GetProcessAffinityMask (GetCurrentProcess (),
+ &vProcessCPUs, &vSystemCPUs))
+ {
+ int CPUs = 0;
+ DWORD_PTR bit;
+
+ for (bit = 1; bit != 0; bit <<= 1)
+ {
+ if (vSystemCPUs & bit)
+ {
+ CPUs++;
+ }
+ }
+ ptw32_smp_system = (CPUs > 1);
+ }
+ else
+ {
+ ptw32_smp_system = PTW32_FALSE;
+ }
+
+#endif
+
+#ifdef WINCE
+
+ /*
+ * Load COREDLL and try to get address of InterlockedCompareExchange
+ */
+ ptw32_h_kernel32 = LoadLibrary (TEXT ("COREDLL.DLL"));
+
+#else
+
+ /*
+ * Load KERNEL32 and try to get address of InterlockedCompareExchange
+ */
+ ptw32_h_kernel32 = LoadLibrary (TEXT ("KERNEL32.DLL"));
+
+#endif
+
+ ptw32_interlocked_compare_exchange =
+ (PTW32_INTERLOCKED_LONG (WINAPI *)
+ (PTW32_INTERLOCKED_LPLONG, PTW32_INTERLOCKED_LONG,
+ PTW32_INTERLOCKED_LONG))
+#if defined(NEED_UNICODE_CONSTS)
+ GetProcAddress (ptw32_h_kernel32,
+ (const TCHAR *) TEXT ("InterlockedCompareExchange"));
+#else
+ GetProcAddress (ptw32_h_kernel32, (LPCSTR) "InterlockedCompareExchange");
+#endif
+
+ if (ptw32_interlocked_compare_exchange == NULL)
+ {
+ ptw32_interlocked_compare_exchange = ptw32_InterlockedCompareExchange;
+
+ /*
+ * If InterlockedCompareExchange is not being used, then free
+ * the kernel32.dll handle now, rather than leaving it until
+ * DLL_PROCESS_DETACH.
+ *
+ * Note: this is not a pedantic exercise in freeing unused
+ * resources! It is a work-around for a bug in Windows 95
+ * (see microsoft knowledge base article, Q187684) which
+ * does Bad Things when FreeLibrary is called within
+ * the DLL_PROCESS_DETACH code, in certain situations.
+ * Since w95 just happens to be a platform which does not
+ * provide InterlockedCompareExchange, the bug will be
+ * effortlessly avoided.
+ */
+ (void) FreeLibrary (ptw32_h_kernel32);
+ ptw32_h_kernel32 = 0;
+ }
+ else
+ {
+ ptw32_features |= PTW32_SYSTEM_INTERLOCKED_COMPARE_EXCHANGE;
+ }
+
+ /*
+ * Load QUSEREX.DLL and try to get address of QueueUserAPCEx
+ */
+ ptw32_h_quserex = LoadLibrary (TEXT ("QUSEREX.DLL"));
+
+ if (ptw32_h_quserex != NULL)
+ {
+ ptw32_register_cancelation = (DWORD (*)(PAPCFUNC, HANDLE, DWORD))
+#if defined(NEED_UNICODE_CONSTS)
+ GetProcAddress (ptw32_h_quserex,
+ (const TCHAR *) TEXT ("QueueUserAPCEx"));
+#else
+ GetProcAddress (ptw32_h_quserex, (LPCSTR) "QueueUserAPCEx");
+#endif
+ }
+
+ if (NULL == ptw32_register_cancelation)
+ {
+ ptw32_register_cancelation = ptw32_RegisterCancelation;
+
+ if (ptw32_h_quserex != NULL)
+ {
+ (void) FreeLibrary (ptw32_h_quserex);
+ }
+ ptw32_h_quserex = 0;
+ }
+ else
+ {
+ /* Initialise QueueUserAPCEx */
+ BOOL (*queue_user_apc_ex_init) (VOID);
+
+ queue_user_apc_ex_init = (BOOL (*)(VOID))
+#if defined(NEED_UNICODE_CONSTS)
+ GetProcAddress (ptw32_h_quserex,
+ (const TCHAR *) TEXT ("QueueUserAPCEx_Init"));
+#else
+ GetProcAddress (ptw32_h_quserex, (LPCSTR) "QueueUserAPCEx_Init");
+#endif
+
+ if (queue_user_apc_ex_init == NULL || !queue_user_apc_ex_init ())
+ {
+ ptw32_register_cancelation = ptw32_RegisterCancelation;
+
+ (void) FreeLibrary (ptw32_h_quserex);
+ ptw32_h_quserex = 0;
+ }
+ }
+
+ if (ptw32_h_quserex)
+ {
+ ptw32_features |= PTW32_ALERTABLE_ASYNC_CANCEL;
+ }
+
+ return result;
+}
+
+
+BOOL
+pthread_win32_process_detach_np ()
+{
+ if (ptw32_processInitialized)
+ {
+ ptw32_thread_t * sp = (ptw32_thread_t *) pthread_getspecific (ptw32_selfThreadKey);
+
+ if (sp != NULL)
+ {
+ /*
+ * Detached threads have their resources automatically
+ * cleaned up upon exit (others must be 'joined').
+ */
+ if (sp->detachState == PTHREAD_CREATE_DETACHED)
+ {
+ ptw32_threadDestroy (sp->ptHandle);
+ TlsSetValue (ptw32_selfThreadKey->key, NULL);
+ }
+ }
+
+ /*
+ * The DLL is being unmapped from the process's address space
+ */
+ ptw32_processTerminate ();
+
+ if (ptw32_h_quserex)
+ {
+ /* Close QueueUserAPCEx */
+ BOOL (*queue_user_apc_ex_fini) (VOID);
+
+ queue_user_apc_ex_fini = (BOOL (*)(VOID))
+#if defined(NEED_UNICODE_CONSTS)
+ GetProcAddress (ptw32_h_quserex,
+ (const TCHAR *) TEXT ("QueueUserAPCEx_Fini"));
+#else
+ GetProcAddress (ptw32_h_quserex, (LPCSTR) "QueueUserAPCEx_Fini");
+#endif
+
+ if (queue_user_apc_ex_fini != NULL)
+ {
+ (void) queue_user_apc_ex_fini ();
+ }
+ (void) FreeLibrary (ptw32_h_quserex);
+ }
+
+ if (ptw32_h_kernel32)
+ {
+ (void) FreeLibrary (ptw32_h_kernel32);
+ }
+ }
+
+ return TRUE;
+}
+
+BOOL
+pthread_win32_thread_attach_np ()
+{
+ return TRUE;
+}
+
+BOOL
+pthread_win32_thread_detach_np ()
+{
+ if (ptw32_processInitialized)
+ {
+ /*
+ * Don't use pthread_self() - to avoid creating an implicit POSIX thread handle
+ * unnecessarily.
+ */
+ ptw32_thread_t * sp = (ptw32_thread_t *) pthread_getspecific (ptw32_selfThreadKey);
+
+ if (sp != NULL) // otherwise Win32 thread with no implicit POSIX handle.
+ {
+ ptw32_callUserDestroyRoutines (sp->ptHandle);
+
+ (void) pthread_mutex_lock (&sp->cancelLock);
+ sp->state = PThreadStateLast;
+ /*
+ * If the thread is joinable at this point then it MUST be joined
+ * or detached explicitly by the application.
+ */
+ (void) pthread_mutex_unlock (&sp->cancelLock);
+
+ if (sp->detachState == PTHREAD_CREATE_DETACHED)
+ {
+ ptw32_threadDestroy (sp->ptHandle);
+
+ TlsSetValue (ptw32_selfThreadKey->key, NULL);
+ }
+ }
+ }
+
+ return TRUE;
+}
+
+BOOL
+pthread_win32_test_features_np (int feature_mask)
+{
+ return ((ptw32_features & feature_mask) == feature_mask);
+}
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